82724477478 has 16 divisors (see below), whose sum is σ = 175181246640. Its totient is φ = 25952777216.

The previous prime is 82724477467. The next prime is 82724477489. The reversal of 82724477478 is 87477442728.

It is an interprime number because it is at equal distance from previous prime (82724477467) and next prime (82724477489).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405512043 + ... + 405512246.

It is an arithmetic number, because the mean of its divisors is an integer number (10948827915).

Almost surely, 2^82724477478 is an apocalyptic number.

82724477478 is an abundant number, since it is smaller than the sum of its proper divisors (92456769162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82724477478 is a wasteful number, since it uses less digits than its factorization.

82724477478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811024311.

The product of its digits is 39337984, while the sum is 60.

The spelling of 82724477478 in words is "eighty-two billion, seven hundred twenty-four million, four hundred seventy-seven thousand, four hundred seventy-eight".